Top posts

Every blog post that took off on Hacker News, ranked by the votes of its best submission. 14,545 posts.

Software Engineering
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12123

The Value of Undefined Behavior

In several places, the C and C++ language specifications use a curious, and fairly controversial, phrase: undefined behavior . For certain program constructs, the specification prescribes no specific behavior, instead allowing anything to happen . Such constructs are considered erroneous, and so the result depends on…

12130

Object-oriented techniques in C

Although the techniques described below won't be very popular nowadays (after all, why bother using C if we're going to write object-oriented code?), they are still quite relevant for embedded systems and other low-level things (kernel development, etc). For example, lots of Linux Kernel subsystems use similar…

12132

What's in a Build Tool?

A "Build tool" is a catch-all term that refers to anything that is needed to get a piece of software set up, but isn't needed after that. Different programming communities have a wealth of different tools: some use stalwarts like make , some use loose collections of .sh scripts, some use XML-based tools like Maven or…

12148

What is Symbolic Computation?

I've been reading a lot of Lisp books lately, some more advanced than others. All of the introductory books I've seen cover the idea of symbolic computation, but most of them breeze past it with just a few pages about "symbols" and "quoting". For many programmers coming from non-Lisp languages these are new, foreign…